AAC Device Grammar-Based Symbol Navigation
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Solution Overview
Problem
Current augmentative and alternative communication (AAC) devices face challenges in efficiently organizing and navigating large sets of picture symbols, leading to increased manual input and difficulty in language communication and acquisition, especially for users with cognitive impairments.
Innovation Solution
The development of MyVoice, an AAC device that utilizes a microprocessor to automatically identify and display subsequent picture symbols based on user input, employing sentence type control, part-of-speech analysis, grammar rules, and statistical context to reduce manual navigation and enhance language acquisition by providing intuitive organization and guided navigation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If picture symbols are organized using semantic compaction (Minspeak) to encode vocabulary using multi-meaning icons, then the number of keystrokes to generate a word is reduced, but the ease of use deteriorates because the encoding scheme is hard to learn, especially for people with challenged cognitive function
Solution Approach 1:
The patent segments the navigation process into distinct phases: manual selection of initial picture symbols, automatic device-assisted navigation through grammar rule application, and automated display of subsequent symbols. This segmentation allows the system to provide productivity benefits through automation while maintaining ease of use by keeping the interface simple and the user in control of the overall process.
Solution Approach 2:
The patent introduces grammar rules and statistical models as intermediaries between the user's initial input and the final sentence construction. These intermediaries automatically handle the complex navigation and symbol selection processes, bridging the gap between simple user input and efficient sentence generation without requiring the user to learn complex encoding schemes.
2Adaptability or versatility
If a large set of picture symbols is divided into subsets using subjective categorization, then the organization becomes meaningful for related items, but the difficulty of implementation increases and universal acceptance decreases
Solution Approach 1:
The patent changes the organizing parameter from subjective human categorization to objective grammar-based classification. Picture symbols are organized according to their grammatical functions (nouns, verbs, adjectives, adverbs, etc.) and their roles in sentence structures. This parameter change makes the organization systematic, universally applicable, and easier to implement while maintaining adaptability to different languages and contexts.
Solution Approach 2:
The patent creates a universal organization system based on grammar rules that can be applied across different languages and contexts. The same grammatical framework organizes picture symbols regardless of the specific vocabulary or cultural context, making the system universally applicable while maintaining ease of implementation through standardized grammatical categories.
3Adaptability or versatility
If manual navigation is used to access picture symbols through hierarchical categories, then the user can access any desired symbol, but the number of actions required increases and navigation efficiency decreases
Solution Approach 1:
The patent performs preliminary actions by automatically analyzing grammar rules and statistical patterns before the user needs to select the next picture symbol. The system pre-computes the most likely next symbols based on the current sentence context and grammatical structure, so that when the user needs to select a symbol, the relevant options are already prepared and displayed, eliminating the need for manual navigation through hierarchical categories.
Solution Approach 2:
The patent implements feedback mechanisms where the system continuously monitors the user's input and the emerging sentence structure, then uses this feedback to automatically adjust and refine the display of subsequent picture symbols. This real-time feedback loop allows the system to maintain versatility in accessing any symbol while minimizing navigation time by presenting only the most relevant options based on the current context.
Data Source
AI summary
Systems and methods for augmentative and alternative communication that provide language communication facilitation and language acquisition enablement. In one embodiment, an AAC apparatus includes a user i/o device, an auditory output device and a microprocessor, wherein the microprocessor presents PICS buttons that are mapped to corresponding words to a user via the i/o device and accepts input via selection of the PICS buttons. In response to selection of a PICS button, the corresponding word is displayed to the user in a speech text box and produces a sound of the word via the auditory output device. The microprocessor further identifies and displays a subsequent set PICS buttons in dependence on the selected PICS button. The subsequent set PICS buttons may also be identified in dependence on word order, grammar rules, statistical and context analyses, and the like to increase navigation speed and to enable the user to learn language skills.